How to use com.ning.compress.lzf.parallel

/**
 * This <code>flush</code> method does nothing.
 */
@Override
public void flush() throws IOException
{
  checkNotClosed();
}

/**
 * {@inheritDoc}
 * WARNING: using this method will lead to very poor performance!
 */
@Override
public void write(final int singleByte) throws IOException
{
  checkNotClosed();
  if (_position >= _outputBuffer.length) {
    writeCompressedBlock();
  }
  _outputBuffer[_position++] = (byte) singleByte;
}

public PLZFOutputStream(final OutputStream outputStream) {
  this(outputStream, DEFAULT_OUTPUT_BUFFER_SIZE, getNThreads());
}

/**
 * Compress and write the current block to the OutputStream
 */
protected void writeCompressedBlock() throws IOException
{
  if (_position == 0) {
    return;
  }
  Future<LZFChunk> lzfFuture = compressExecutor.submit(new CompressTask(_outputBuffer, 0, _position, blockManager));
  writeExecutor.execute(new WriteTask(out, lzfFuture, this));
  _outputBuffer = blockManager.getBlockFromPool();
  _position = 0;
  checkWriteException();
}

public void write(final InputStream in) throws IOException {
  writeCompressedBlock(); // will flush _outputBuffer
  int read;
  while ((read = in.read(_outputBuffer)) >= 0) {
    _position = read;
    writeCompressedBlock();
  }
}

public void write(final FileChannel in) throws IOException {
  MappedByteBuffer src = in.map(MapMode.READ_ONLY, 0, in.size());
  write(src);
}

/** {@inheritDoc} */
@Override
public LZFChunk call() {
  if (data != null) {
    LZFChunk lzfChunk = ENCODER.get().encodeChunk(data, offset, length);
    // input data is fully processed, we can now discard it
    blockManager.releaseBlockToPool(data);
    return lzfChunk;
  } else {
    // cleanup time!
    ENCODER.remove();
    return null;
  }
}

/**
 * Compress and write the current block to the OutputStream
 */
protected void writeCompressedBlock() throws IOException
{
  if (_position == 0) {
    return;
  }
  Future<LZFChunk> lzfFuture = compressExecutor.submit(new CompressTask(_outputBuffer, 0, _position, blockManager));
  writeExecutor.execute(new WriteTask(out, lzfFuture, this));
  _outputBuffer = blockManager.getBlockFromPool();
  _position = 0;
  checkWriteException();
}

/**
 * {@inheritDoc}
 * WARNING: using this method will lead to very poor performance!
 */
@Override
public void write(final int singleByte) throws IOException
{
  checkNotClosed();
  if (_position >= _outputBuffer.length) {
    writeCompressedBlock();
  }
  _outputBuffer[_position++] = (byte) singleByte;
}

/**
 * This <code>flush</code> method does nothing.
 */
@Override
public void flush() throws IOException
{
  checkNotClosed();
}

public PLZFOutputStream(final OutputStream outputStream) {
  this(outputStream, DEFAULT_OUTPUT_BUFFER_SIZE, getNThreads());
}

public void write(final InputStream in) throws IOException {
  writeCompressedBlock(); // will flush _outputBuffer
  int read;
  while ((read = in.read(_outputBuffer)) >= 0) {
    _position = read;
    writeCompressedBlock();
  }
}

public void write(final FileChannel in) throws IOException {
  MappedByteBuffer src = in.map(MapMode.READ_ONLY, 0, in.size());
  write(src);
}

/** {@inheritDoc} */
@Override
public LZFChunk call() {
  if (data != null) {
    LZFChunk lzfChunk = ENCODER.get().encodeChunk(data, offset, length);
    // input data is fully processed, we can now discard it
    blockManager.releaseBlockToPool(data);
    return lzfChunk;
  } else {
    // cleanup time!
    ENCODER.remove();
    return null;
  }
}

/**
 * Compress and write the current block to the OutputStream
 */
protected void writeCompressedBlock() throws IOException
{
  if (_position == 0) {
    return;
  }
  Future<LZFChunk> lzfFuture = compressExecutor.submit(new CompressTask(_outputBuffer, 0, _position, blockManager));
  writeExecutor.execute(new WriteTask(out, lzfFuture, this));
  _outputBuffer = blockManager.getBlockFromPool();
  _position = 0;
  checkWriteException();
}

/**
 * {@inheritDoc}
 * WARNING: using this method will lead to very poor performance!
 */
@Override
public void write(final int singleByte) throws IOException
{
  checkNotClosed();
  if (_position >= _outputBuffer.length) {
    writeCompressedBlock();
  }
  _outputBuffer[_position++] = (byte) singleByte;
}

/**
 * This <code>flush</code> method does nothing.
 */
@Override
public void flush() throws IOException
{
  checkNotClosed();
}

public PLZFOutputStream(final OutputStream outputStream) {
  this(outputStream, DEFAULT_OUTPUT_BUFFER_SIZE, getNThreads());
}

public void write(final InputStream in) throws IOException {
  writeCompressedBlock(); // will flush _outputBuffer
  int read;
  while ((read = in.read(_outputBuffer)) >= 0) {
    _position = read;
    writeCompressedBlock();
  }
}

public void write(final FileChannel in) throws IOException {
  MappedByteBuffer src = in.map(MapMode.READ_ONLY, 0, in.size());
  write(src);
}